<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<title></title>
</head>
<body>
<form action='' method='get'>
	<input type='text' name='x'>
	<input type='submit' value='提交'>
</form>
<?php
	error_reporting(E_ERROR);
	echo "hello " . htmlspecialchars($_GET['x']);
?>
</body>
</html>

